| Literature DB >> 30093071 |
E Vermeersch1, S Liénart2, A Collignon2, S Lucas2, A Gallimore3, C Gysemans4, D Unutmaz5, K Vanhoorelbeke1, S F De Meyer1, W Maes1, H Deckmyn6.
Abstract
GARP is a transmembrane protein that presents latent TGF-β1 on the surface of regulatory T cells (Tregs). Neutralizing anti-GARP monoclonal antibodies that prevent the release of active TGF-β1, inhibit the immunosuppressive activity of human Tregs in vivo. In this study, we investigated the contribution of GARP on mouse Tregs to immunosuppression in experimental tumors. Unexpectedly, Foxp3 conditional garp knockout (KO) mice challenged orthotopically with GL261 tumor cells or subcutaneously with MC38 colon carcinoma cells did not show prolonged survival or delayed tumor growth. Also, the suppressive function of KO Tregs was similar to that of wild type Tregs in the T cell transfer model in allogeneic, immunodeficient mice. In conclusion, garp deletion in mouse Tregs is not sufficient to impair their immunosuppressive activity in vivo.Entities:
Keywords: GARP; Immune response; LRRC32; Regulatory T cells; Tumor models
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Year: 2018 PMID： 30093071 DOI： 10.1016/j.cellimm.2018.07.011
Source DB: PubMed Journal: Cell Immunol ISSN： 0008-8749 Impact factor: 4.868